Phonograph speed-regulator.



E. L. AIKEN.

,PHONOGRAPH SPEED REGULATOR APPLICATION FILED PBB.20.1906.

Patented Aug. 20, 1912.

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EDWARD AIKEmor-E'As'r ortAlveisx, NEW (JERSEY, AssrGNon, BYMESNE ASSIGN-MENTS, TO THOMAS A. EDISON, INCORPORATED, OFWEST ORANGE, NEW JERSEY;v

l vA CORPORATION OFNEWJEBSEY.

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Specification of Letters Patent. I

Patented Aug; 2o, 1912.

To all whom t'may concern Be it knownl that I, EDWARD L. AIKEN, acitizen 4of-the 'United States, anda resident of Eastorange, in thecounty orf Essex `and State 'of New Jersey, haveinvented certain new anduseful Improvements in Phonograph 'Speed-Regulators, bf- 4which 'thefollowing 'is a description.

My invention relates 4"to phonograph-V `or. talking machine speedregulators wherein a friction Apad is caused-to bear against a'slidablevfriction disk carried bythe lmotor governor. the use of instrumentsv ofthis character, it isdes'irable that' means be provided for startiingandstopping the motor andfor regulating and' indicating the speed.

thereo ItI is also desirable that the .mechanism or'acc'o" thisresultjls'hall be simpl'efand read'l y accessible andat. thefsame timethat such mechanismfwhen a 'lied to phonographs wherein motor fame isbody or bedpla'te of the Phllogmph proper' invention, together with themotor Mv'. invention hasjor'itsobjectthe .production of a device ofthischaractfer which shall possess'ltheidesirable. qualities above set.xorth, which sha-ll rovidean adjustment-of the lfriction pad, w ichshall haof veryfew partsand ca able of beingappli'ed-l to sta-nd,- -afd'types i phonegmphsi .1

Reference 1s hereby made. to. the accompanying drawing whichl$hows="a"-ront elevation of a phonograph1 4operated by la' motorcarried by the body -of the instrument through suspensiousprings, said'parts being shown in dotted lines and one form of my being shown in fulllines.

The body orbed plate 1 of the phonograph rests in the usualv mannervupon a cabinet (not shown) and is provided with downwardly projectingbosses 2, in which are v' threaded screws', 3 upon which are placed'.fpairs of spiral springs 4, f1.v Floated be` y comprises'a 'ation diskI carried by a slidf tweenthesprings of each pair and upon the- 50.

. of any `approved form, such as 4a spring bolts 3 is a motor :trame 5carrying a motor motor hav the usual governor 6 which lever 15.

curved on an arc indic'zat-ngv gradnations 22, as shown.

into said frame. The lower end of the lever 9 is provided 'with a screw11 which` is threaded therein and carries atA its end a Afriction pad 12adapted to press against the disk 7, This screw is clamped in anydesired position of adjustment by a screw 13, the end of the lever 9being split in a well known mannery so as to be clamped upon the Screw11 to hold the same'agalnst turning. Above the lever 9 and connectedthereto by 'a pin and slot connection 14 is an operating This-lever ispivoted on a lscrew -16 which isthreaded in the motor framel. The lever15 extends th'rough'an opening in the'bed-plate l so 'as to occupyaposition 'whereit may be readily operated. The said (opening, however,is of such size that the .said lever `cannot possibly Contact with thebedplate.l

Rigidly secured lto the motor frame 5-by screws 17 is a vertical plate18.

4The uppervportion of this plate'is formed withdaterally extending arms,the ends of .which'are bent at right angles as indicated at 19, so as toform stops limiting the movement of the llever 15 upon its axis in bothdirections.. The ugper edge of lthis. plate is l escribed about thepivot of theflever 15, and ymay be provided with depression 20 ispreferably formed inthe reaifface'of the plate 18 which Iis adapted tolreceive a small pin or elevation 21 carried byI thelever 15 order tovhold the lever at orjnear'its central position. 1

In the posit-ion indicated inthe draw-ing the' lever 15 is at itsextreme left hand position-"whichshould besuch 'asf to press thefriction' pad 12 against' the disk 7 with a pressure suicient to prevent-rotation thereof. JAS the lever 15 is moved toward the.. v right it isobvious that the friction pad 12 will Vbe carried away from the disk.7andI will allow the motor to start and gain s'peed untilthe frictiondisk 7 i is Hlin-fought against the pad i12, eachposition" of said padcorre' spending.v toa. definite motor speed 'which may be ln'dicated onthe scale 22,4 ifdesired; The intermediate position of the lever 15l inwhich the lever is locked by the engagement of the depression 21 withthe ,projection 20 @0rresponderte File. Ninety at' which.'

parts is suicient to prevent the pressure of i the disk 7 'upon the pad1:2 from turning thelever 9 upon its pivot. It will be observed that theentire device is carried by the motor frame 5 .and is entirelyindependent of .and out of contact withthe bed-plate or body of thephonograph,'whereby the vibrations of the motor frame will not betransmitted to said body. The levers 9` and 15 may be replaced ifdesired by a single lever pivoted at 16. p

Having now described my invention, what 'I claim as new and desire tosecure by Let-- ters Patent is r" l 1. In a phonograph speed regulator,the combination with a motor governor comprising a movablefrictiondi'sk, of a pivoted lever, a screw threaded in said lever andcarrying al friction pad 4adapted to engage the friction disk, means forlocking said screw against rotation, anindicator plate having stopsthereon, and an arm pivoted to move past said plate between said stopsand connected to said lever so as to positively actuate the latter when-moved in either direction to control and indicate the position of saidpad and the resulting motor speed, substantially as described.

2. In a phonograph, the combination with the body or bed-plate providedwith springs, the said bed plate having a vertical -slot therein, of amotor frame fioated between said springs and carrying a motor adapted tooperate the phonograph, said motor comprising a governor and movablefriction disk, and means carried by said motor frame for varying thespeed of said motor, said means extending vertically above said motorframe and comprising a pivoted lever carrying a. friction pad adapted toengage the friction disk of the motor governor and a second pivotedlever for varying 'the position of the first lever, said second lever extending through the said slot, a plate mounted on the motor frame,adjacent the said lever, and stops on said plate to prevent the saidlever from contacting the ends of the slot, substantially as described.

3. In a phonograph, the combination v. ith the body or bed-plateprovided xvith springs, the said bed-plate having a vertical slottherein, of a mot-or frame resting upon said springs and carrying amotor adapted to op erate the phonograph, said motor comiirising agovernor and movable friction disk, and means carried by said motorframe for varying the speed of said motor, said means comprising afriction pad adapted to engage the friction disk, means for varying theposition ofthe pad relative to the disk. comprising a lever extendingthrough the slot in the bed plate, a plate mounted on the motor frame.,adjacent the said lever, and stops on said plate to prevent the saidlever from contacting the ends of the slot, substantially as described.

4:, In a phonograph, the combination with the body or bed plate providedwith springs, the said-bed plate having a slot therein, of a motor framesupported by said springs and carrying a motor adapted to operate thephonograph, said motor comprising a governbr and a movable frictiondisk, and means carried by said motor frame for vary ing the speed ofsaid motor, said means comprising a friction member adapted to engagethe friction disk, and means comprising a lever extending looselythrough the slot in thebed plate for varying the position of thefriction member relatively to the disk', and stops connectedwith themotor frame to prevent the said lever from contacting the ends of saidslot, substantially as described.

This specification signed this 13th day of February 1906.

EDWARD L. AIKEN.

' Witnesses:

DELos ,Honn'nm FRANK D. LEWIS.'

and witnessed

